Door-spring



(No Model.) J. HWILLIAMS.

DOOR SPRING.

Patented Apr. 9., 1889.

UNITED STATES ATENT rricn.

JOHN H. \VILLIAMS, OF IVATERLOO, IOWA.

DOOR-SPRING.

SPECIFICATION forming part of Letters Patent No, {101,319, dated April9, 1889. Application filed December 26, 1888. Serial No. 294,579, (Nomodel.)

To all whom it may concern..-

Be it known that I, JOHN H. YVILLIAMS, a citizen of the United. States,residing at Vaterloo, in the county of Black Hawk and State of Iowa,have in vented certain new and use ful Improvements in Door-0losers; andI do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters and figures of referencemarked thereon, which form a part of this specification.

Figure 1 is a vertical section and partial elevation of a device whichembodies my invention, and showing also sections of a door anddoor-jamb. Fig. 2 is an end elevation of the door-closing spring and itsframe. Fig. 3 is a perspective view of the bracket which supports thedoor-closing spring.

My invention relates to that class of devices which. operate constantlyto close a door when opened.

For this purpose my improvements consist in the following constructionand combination of parts, a detailed description of which will first begiven, and the points of novelty then set forth in the claim.

In the drawings, arepresents the spring supporting bracket. 1) is thebearing or journal which receives the pintle of the springcarryingframe. This bearing b is the only essential feature of this bracketthatis to say, it may be made of any form or shape desired, so long as ithas a bearing for the pivoted spring-frame, and be otl'ierwise suitablefor the purpose. This bracket (1 consists of a bearing-block, 0, sidearms, (I, and a rear wall, 6, provided with screw-holes for attaching itto a door or door-jamb. It may be made of one or more pieces.

f is a frame in which are hung the operating parts of my improveddoor-closer. g g are the two sides of the frame.

71 is the connecting base-plate, and 2' is the pintle or bearing, whichis pivotally seated in the bracket (1.

j is a non-rotatable shaft hung in the sides 7 is is a rotating drummounted on shaft Zis a coiled spring, one end of which is fastened tothe stationary shaft or arbor j,

and the other or outer end secured to the drum.

m is a thin metallic ribbon or band, one end of which is fastened to theexterior or circumference of the drum, and is coiled thereon, and theother attached to the door or door-jamb.

In an upward extension of the sides of the spring-carrying frame aremounted anti-friction rolls n n, through which the ribbon passes. Theextension-sides serve as a guide to prevent the ribbon slipping off thedrum. There may be one or two rolls, a n, and they may be rotatable ornot. 0 is an eye or hook by means of which the ribbon may be secured tothe eye or hook p in the door-jamb or door.

In the drawings I have shown the bracket attached to the door and oneend of the rib bon to the door-jamb; but it should be understood that Imay reverse this arrangement and affix the bracket to the jamb and theribbon t0 the door.

Instead of the metallic ribbon. I may use a strap of leather or otherfabric, or a cord, (wire, if desired) or a chain. This change will bereadily understood.

In operation, when the door is opened, the pivoted spring-carrying framef adjusts itself automatically to the constantly-varying angle of thedoor and jamb, when the door is in motion, either in opening or closing.This swiveling movement of the frame f on the bracket results in asteady straight pull or tension upon the wire-ribbon, preventing anytendency of its buckling. A dustcap may be placed over the framef. Thespring and its drum and frame may be of any known design suitable forthe purpose.

hat I claim is In a door-closer, the combination of a bracket having abearing therein, a drumcarrying frame swiveled in the bracket, a drummounted in the frame, a ribbon, cord, or the like wound upon the drum,and a spring attached to the drum and frame, all substantially as setforth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN H. WILLIAMS.

itnessesc H. D. WILLIAMS, J. SEDGWICK.

